From: Larry Finger <Larry.Finger@lwfinger.net>
To: Ben Ruijl <benruyl@gmail.com>
Cc: linux-wireless@vger.kernel.org
Subject: Re: r8712u: packet loss
Date: Sun, 06 Mar 2011 11:31:24 -0600 [thread overview]
Message-ID: <4D73C4EC.7090702@lwfinger.net> (raw)
In-Reply-To: <AANLkTikmFj5EDaa3sY6d05XRCKwBWywtMaekmK1hCHPX@mail.gmail.com>
On 03/06/2011 03:52 AM, Ben Ruijl wrote:
> Hi Larry,
>
> The iwconfig I sent you is wrong, because I switched routers. The
> router I had was a wireless N router, with which I had 12 percent
> packet loss. The iwconfig you are seeing is with a wireless G
> connection and now I only have 1 percent packet loss: the same as you
> have. It appears that the relative packet loss is greater with an N
> connection.
I have no idea why the loss should be greater with the N router than with the G
router.
How is the 2.4 GHz part of the N router configured? What make/model is it, and
what firmware is it running? Do you have the latest version?
My N router is a Netgear WNDR3300 normally running up to 270 Mbps at 5 GHz and
54 Mbps at 2.4 GHz; however, I changed it to run up to 270 Mbps in the 2.4 GHz
band. Again, I get 1% ping loss. My iwconfig output is
wlan12 IEEE 802.11bgn ESSID:"lwfdjf-n" Nickname:"rtl_wifi"
Mode:Managed Frequency:2.422 GHz Access Point: C0:3F:0E:BE:2B:44
Bit Rate:270 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality=97/100 Signal level=100/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
That link gets an upload speed measured with tcpperf of more than 80 Mbps.
I do not know why your N link is so lossy. The possible reasons are outdated
firmware in the router that was established in the pre-N days, or you have
noise/interference that affects the HT setup more than a simple G configuration.
Larry
prev parent reply other threads:[~2011-03-06 17:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTi=-KJ+OSvDGuxYvDYQZ2ZdS8G8obbvodOXd9zQD@mail.gmail.com>
[not found] ` <AANLkTimTecR-W7iGzRWB_DxNVJoovK5SCuWfCmt8SUJo@mail.gmail.com>
2011-02-15 12:58 ` r8712u: packet loss Ben Ruijl
2011-02-15 16:40 ` Larry Finger
2011-02-15 17:20 ` Ben Ruijl
2011-02-15 18:04 ` Larry Finger
2011-02-18 15:02 ` Ben Ruijl
2011-03-06 9:52 ` Ben Ruijl
2011-03-06 17:31 ` Larry Finger [this message]
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